The design of this study was suggested by the following observations:
(1) the successful application of recurrent selection
techniques in obtaining improvement of hybrid performance in corn
and Drosophila, (2) the increased production realized by rotational
crossbreeding, and (3) the expression of a relatively large degree
of hybrid vigor in...
Litter site and birth weight data compiled from the
farrowing records of 275 litters out of 109 purebred
Berkshire sows of the Oregon State University swine herd
during the years 1953 to 1960 inclusive were used in this
study. Genetic and environmental factors influencing
four components of reproductive performance, namely,...
Urban centers, in part, are in the process of deterioration. Consequently, land values in these areas, both in dollars and in contribution to the community, remain dormant or depressed. There seems little doubt that there will be greater pressure for urban land. Urban renewal is one method of returning deteriorated...
The effect of soil water suction and soil temperature on rates
of transpiration, photosynthesis, respiration and nitrogen fixation of
soybean (Glycine max. Merrill, var. Chippewa 64) seedlings was
studied. A special apparatus was developed in which the soil water
suction of several cells with soybeans growing in them could be...
Published March 1967. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The purpose of the present study was to investigate the effect
of a number of physical and chemical attributes upon muskmelon
texture as described by sensory evaluation. Measurements of turgor
pressure, percent moisture, total sugars, alcohol-insoluble-solids,
three pectic fractions, total pectic materials, starch and cellulose
were performed on 50 melons....
Studies in other laboratories have established the presence of
the Embden-Meyerhof-Parnas (EMP) pathway and the pentose phosphate
(PP) pathway in plant tissue. Research in this laboratory with mung
bean (Phaseolus aureus) seedlings has confirmed the presence of these
two pathways as well as the glucuronic acid (GA) pathway. However,
no...
A circuit which functions as a controlled negative-resistance is
described and analyzed; the circuit contains two transistors, a breakdown
diode, and five resistors connected in a stable feedback configuration.
From the analysis a set of design equations is derived.
An experimental circuit is described and a comparison between
measured performance...
The purpose of this study was to compare the level of behavioral
understanding of preschool children of mothers who had observed in
the nursery school with the level of behavioral understanding of
mothers who had not observed. "Behavioral understanding" was defined
as a mother's degree of awareness of the factors...